Overview
The LC74789, LC74789M, and LC74789JM are on-
screen display controller CMOS ICs that display
characters and patterns on the TV screen under
microprocessor control. These ICs support 12
× 18 dot
characters and can display 12 lines by 24 characters of
text.
Features
Display format: 24 characters by 12 rows (Up to 288
characters)
Character format: 12 (horizontal)
× 18 (vertical) dots
Character sizes: Three sizes each in the horizontal and
vertical directions
Characters in font: 256 (254 characters, one spacing
character, and one transparent spacing character)
Initial display positions: 64 horizontal positions and 64
vertical positions
Blinking: Specifiable in character units
Blinking types: Two periods supported: About 1.0
second and about 0.5 second
Blanking: Over the whole font (12
× 18 dots)
Background color: 8 colors (internal synchronization
mode): 2fSC and 4fSC
Line background color
— Can be set for 3 lines
— Line background color: 8 colors (internal
synchronization mode): 2fSC and 4fSC
External control input: 8-bit serial input format
On-chip sync separator circuit
Video outputs: NTSC, PAL, PAL-N, PAL-M, NTSC
4.43, and PAL60 format composite video outputs
Package
— 24-pin plastic DIP-24S (300 mil)
— 24-pin plastic MFP-24 (375 mil)
— 24-pin plastic MFP-24S (300 mil)
Package Dimensions
unit: mm
3067-DIP24S
unit: mm
3045B-MFP24
unit: mm
3112-MFP24S
CMOS IC
30698HA (OT) No. 5732-1/23
SANYO: DIP24S
[LC74789]
SANYO: MFP24
[LC74789M]
SANYO: MFP24S
[LC74789JM]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
On-Screen Display Controller
LC74789, 74789M, 74789JM
Ordering number : EN5732A